Fireproof cluster tanks of concrete.



No. '667,|72. Patented Jan. 29, 190i. I I E. L. HEIDENREICH.

FIREPRCCF CLUSTER TANKS 0F CONCRETE. (Application filed Sept. 25, 1960. (No Model.) 2 Sheets-Sheet l.'

W J u g 111 p QWMW 2 No. 667,!72. Patented Jan. 29, [90L E. L. HEIDENREICH.

'FIREPBOOF CLUSTER TANKS 0F CONCRETE.

(Application filed Sept. 28, 1900.) I

(No Model.) 2 ShoetsSheat 2.

JHTo mgys- UNITED STATES PATENT OFFICE.

-EYVIND LEEIHEIDENREICH, OF CHICAGO, ILLINOIS.

FIREPROOF CLUSTER TANKS OF CONCRETE.

SPECIFICATION forming part of Letters Patent No. 667,172, dated January 29, 1901.

Application filed September 28,1900. Serial No. 31,371. (No model.)

To all whom it may concern: I

Be it known that I, EY IND LEE HEIDEN- REICH, a resident of Chicago, in the county therein.

ing drawings, forming a part of this specification.

This invention has relation to the building of'tanks of concrete under those systems such, for example, as the Monier system+in which the tanks are formed of concrete with suitable metal stay rods or rings embedded My invention consists in building a series or cluster of concrete tanks upon a common concrete base, the base, the tanks, and theirf, connecting-walls (by which term is meant the vertical lines of union of the tanks) being formed from an integral homogeneous mass of concrete, so that the ,fin-

,.ished--structure shall be, as it were, monolithic in character or as ifcarved from a block of stone.

In the accompanying drawings my invention is shown as applied toa cluster or group of twelve tanks mounted upon a common base formed integraltherewith; but itis manifest that the number of tanks comprised in the group or cluster may be increased or diminished and the size and thickness of the walls may be varied in correspondence with the size of the tanks and the particular purpose for which th ey may be designed.

Figure 1 is a view in vertical sectiouupon line 1 1 of Fig. 3. Fig. 2 is a detail view, in vertical section and upon an enlarged scale, showing the upper portion and cover of one of the tanks and showing also a portion of the bottom and of the foundation of's'uch tank. Fig. 3 is a view'in horizontal section upon line 3.3 of Fig. 1.

In the practice of this invention the base'A, the tank-walls B, and the connecting-walls C are all formed from an integral homogeneousmass of concretefby which term a mixture of Portland cement and sand or crushed stone in suitable proportions is' commonly designated in the art. Through the base A are extended the horizontal rods D and-D,

these rods being arranged in the manner commonly practiced in the well-known -Monier system In the walls of the tanks B are also arranged horizontal rings or metal stay-rods E, and preferably, also, vertical stay-rods E, the rods' being of suitable .size, shape, numher, and arrangement. Around the top of each of the tanks is extended aZ-shaped annular cap-plate F, that serves to support the individual roof Got the tank, this roof being formed of concrete having stay-rodmG' embedded therein. The base'A is preferably thicker than the vertical walls of the tanks;

the bottoms of the tanks may'be formed integral with the baseA throughout.

In carrying out the invention the base A V will first be formed, the stay rods or Wires being set in theconcrete at the. proper points, and while the concrete of the base is still in plastic conditionthe walls of the'tanks Band the connecting-walls O, uniting the tanks, will be carried up therefrom, the stay rods or wires of the tanks and connecting-walls being properly embedded in the concrete mass as they are erected. When the tanks have been carried to the desired height,j an annular Z-bar F'will be set in position upon each of thetanks, and the covers G will then be placed above the tanks. It will be understood, of course, that the covers will be pro-' vided with suitable openings -'for the admission of the material with which the. tanks will be filled. If it is desiredto employ the spaces M between the tanks as receptacles, covers will also be provided for the tops of such spaces. It will be understood also that suitroe tanks in accordance withthis invention the I bodies 70f the tanks, their foundation, and their connecting-walls being formed from a hardened mass of concrete, every particle of strain delivered at any point of the cluster isdistributed throughout the 1nass,'and this is true whether the strains be considered as vertical, dneto the weight of the material Within any individual tank, or as horizontal, or as the resultant of these strains in any direction. The tanks, their connectingwalls, and

their common base being formed of one inte-.

gral homogeneous mass of hardened material constitute, as it were, a monolithic structure in which every particle of strain delivered to any'individual tank is instantly distributed to allp'arts of the tank cluster and the base. This construction is particularly advantageous wheretanks are to be built upon soil of unstable character, since it avoids the ne, 'cessity of heavy and deeply-laid foundations to resist the strain of the superstructure.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is A' monolithic cluster of circular fireproof tanks formed of hardened concrete, said tanks being set adjacent each other so as to form,

intermediate spaces or chambers and upon a common base that extendsbeneath said tanks said tanks and serving to resist the tensile strain from the interior of the tanks and the compression strain from the intermedia spaces. I v I EYVIND LEE HEiDENREICI-I.

Witnesses:

ALBERTA ADaMIoK, GEORGE P. FISHER, Jr. 

